The device is disposed in a line of treatment of the woven ones and comprises a treatment room (1) within which the woven one in motion (t) approaches through an estate syphon (2). In the room (1) the woven one in motion comes obliged to cover a first distance pointed out to the escape of the sent one (8) of blowing (9). The woven one comes then made to cover a waved distance (11A, 11B) place to the income of the aspiration (10) of blowing (9) where comes invested from currents of treatment liquid in order to exit from the room of treatment (1) through an ulterior one held to syphon (2) in order to carry itself from to a device to pressori cylinders where comes here strizzato and to continue then towards other apparatuses.